With the COPYDUMP command, you can make from 1 to 255 copies of DFSMSdss-produced dump data. The data to be copied, a sequential data set, can be on a tape or a DASD volume, and copies can be written to a tape or a DASD volume. If the dump data is produced from multiple DASD volumes by using a physical data set dump operation, you can selectively copy the data from one or more of those volumes.

The COPYDUMP command cannot change the block size of the DFSMSdss dump data set. If you are copying a dump data set to a DASD device, the source block size must be small enough to fit on the target device.

You can use the COPYDUMP command to convert a sequential data set between extended format and non-extended format.